2016813123 has 12 divisors (see below), whose sum is σ = 3137265040. Its totient is φ = 1241115696.

The previous prime is 2016813119. The next prime is 2016813143. The reversal of 2016813123 is 3213186102.

It is a happy number.

It is not a de Polignac number, because 2016813123 - 2² = 2016813119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2016813143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8618743 + ... + 8618976.

Almost surely, 2^2016813123 is an apocalyptic number.

2016813123 is a deficient number, since it is larger than the sum of its proper divisors (1120451917).

2016813123 is a wasteful number, since it uses less digits than its factorization.

2016813123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17237738 (or 17237735 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2016813123 is about 44908.9425727215. The cubic root of 2016813123 is about 1263.4417372202.

Adding to 2016813123 its reverse (3213186102), we get a palindrome (5229999225).

The spelling of 2016813123 in words is "two billion, sixteen million, eight hundred thirteen thousand, one hundred twenty-three".